Tanashi, Japan

Fumio Takeuchi

This inventor holds 2 USPTO granted patents. Top assignee: Citizen Watch Company, Ltd.. Active years: 1983-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fumio Takeuchi. Retrieved from https://idiyas.com/inventor/fumio-takeuchi-xrr9n3i5

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 2

Forward Citations = 8(Granted Patents)


Location History:

  • Tanashi, JP (1983)
  • Sayama, JP (1989)

Company Filing History:


Years Active: 1983-1989

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2 patents (USPTO):Explore Patents

Title: The Innovative Mind of Fumio Takeuchi

Introduction: Fumio Takeuchi, an accomplished inventor based in Tanashi, Japan, has made significant contributions to the fields of timepiece technology and strap design. With two patents to his name, he continues to push the boundaries of innovation within the industry. His work at Citizen Watch Company, Ltd. showcases his dedication to enhancing the functionality and user experience of various products.

Latest Patents: Fumio Takeuchi's latest patents reflect his unique approach to design and engineering. One of his notable inventions is the "Strap Buckle Structure." This strap design incorporates a buckle body made from synthetic resin material, featuring two leg portions that enhance the mounting mechanism. The design includes a mounting hole and pin, allowing for a secure and efficient connection that is easy to use.

Another significant invention is the "Timepiece Push-Button Structure." This innovation features a spring member with bridge-shaped tongue portions that centralize pressure application. The design includes a push-button that engages with an arcuate notch, ensuring reliable functionality while utilizing pressure conductive rubber that enhances the user experience. These patents highlight Fumio's adeptness at combining practicality with sophisticated engineering.

Career Highlights: Fumio Takeuchi’s career at Citizen Watch Company, Ltd. has been marked by his commitment to innovative design and his ability to tackle complex engineering challenges. His contributions have not only advanced the company's product offerings but also set new standards in the timepiece industry. His patent portfolio exemplifies his skill in merging aesthetics with functionality.

Collaborations: Throughout his career, Fumio has collaborated with notable colleagues such as Masahiko Waki and Hisao Yamagata. These partnerships have allowed him to leverage diverse perspectives and expertise, resulting in groundbreaking innovations that have positively impacted commercial designs and products within the company.

Conclusion: Fumio Takeuchi stands out as a visionary inventor whose work at Citizen Watch Company, Ltd. has propelled advancements in both strap and timepiece technology. His patents reflect a deep understanding of user needs and technical requirements, highlighting his role in shaping the future of product design. Through his collaborations and innovative spirit, Fumio continues to inspire future generations of inventors in the industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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